forked from zaclys/searxng
125 lines
4.2 KiB
Python
125 lines
4.2 KiB
Python
'''
|
|
searx is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
searx is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with searx. If not, see < http://www.gnu.org/licenses/ >.
|
|
|
|
(C) 2017- by Alexandre Flament, <alex@al-f.net>
|
|
'''
|
|
|
|
|
|
from typing import Optional, Union
|
|
|
|
|
|
class SearxException(Exception):
|
|
pass
|
|
|
|
|
|
class SearxParameterException(SearxException):
|
|
def __init__(self, name, value):
|
|
if value == '' or value is None:
|
|
message = 'Empty ' + name + ' parameter'
|
|
else:
|
|
message = 'Invalid value "' + value + '" for parameter ' + name
|
|
super().__init__(message)
|
|
self.message = message
|
|
self.parameter_name = name
|
|
self.parameter_value = value
|
|
|
|
|
|
class SearxSettingsException(SearxException):
|
|
"""Error while loading the settings"""
|
|
|
|
def __init__(self, message: Union[str, Exception], filename: Optional[str]):
|
|
super().__init__(message)
|
|
self.message = message
|
|
self.filename = filename
|
|
|
|
|
|
class SearxEngineException(SearxException):
|
|
"""Error inside an engine"""
|
|
|
|
|
|
class SearxXPathSyntaxException(SearxEngineException):
|
|
"""Syntax error in a XPATH"""
|
|
|
|
def __init__(self, xpath_spec, message):
|
|
super().__init__(str(xpath_spec) + " " + message)
|
|
self.message = message
|
|
# str(xpath_spec) to deal with str and XPath instance
|
|
self.xpath_str = str(xpath_spec)
|
|
|
|
|
|
class SearxEngineResponseException(SearxEngineException):
|
|
"""Impossible to parse the result of an engine"""
|
|
|
|
|
|
class SearxEngineAPIException(SearxEngineResponseException):
|
|
"""The website has returned an application error"""
|
|
|
|
|
|
class SearxEngineAccessDeniedException(SearxEngineResponseException):
|
|
"""The website is blocking the access"""
|
|
|
|
SUSPEND_TIME_SETTING = "search.suspended_times.SearxEngineAccessDenied"
|
|
"""This settings contains the default suspended time"""
|
|
|
|
def __init__(self, suspended_time: int = None, message: str = 'Access denied'):
|
|
"""Generic exception to raise when an engine denies access to the results
|
|
|
|
Args:
|
|
suspended_time (int, optional): How long the engine is going to be suspended in second. Defaults to None.
|
|
message (str, optional): Internal message. Defaults to 'Access denied'.
|
|
"""
|
|
suspended_time = suspended_time or self._get_default_suspended_time()
|
|
super().__init__(message + ', suspended_time=' + str(suspended_time))
|
|
self.suspended_time = suspended_time
|
|
self.message = message
|
|
|
|
def _get_default_suspended_time(self):
|
|
from searx import get_setting
|
|
|
|
return get_setting(self.SUSPEND_TIME_SETTING)
|
|
|
|
|
|
class SearxEngineCaptchaException(SearxEngineAccessDeniedException):
|
|
"""The website has returned a CAPTCHA
|
|
|
|
By default, searx stops sending requests to this engine for 1 day.
|
|
"""
|
|
|
|
SUSPEND_TIME_SETTING = "search.suspended_times.SearxEngineCaptcha"
|
|
|
|
def __init__(self, suspended_time=None, message='CAPTCHA'):
|
|
super().__init__(message=message, suspended_time=suspended_time)
|
|
|
|
|
|
class SearxEngineTooManyRequestsException(SearxEngineAccessDeniedException):
|
|
"""The website has returned a Too Many Request status code
|
|
|
|
By default, searx stops sending requests to this engine for 1 hour.
|
|
"""
|
|
|
|
SUSPEND_TIME_SETTING = "search.suspended_times.SearxEngineTooManyRequests"
|
|
|
|
def __init__(self, suspended_time=None, message='Too many request'):
|
|
super().__init__(message=message, suspended_time=suspended_time)
|
|
|
|
|
|
class SearxEngineXPathException(SearxEngineResponseException):
|
|
"""Error while getting the result of an XPath expression"""
|
|
|
|
def __init__(self, xpath_spec, message):
|
|
super().__init__(str(xpath_spec) + " " + message)
|
|
self.message = message
|
|
# str(xpath_spec) to deal with str and XPath instance
|
|
self.xpath_str = str(xpath_spec)
|